Using VSPI GPIO Pins for Interrupts on T-SIM7600E/G-H
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Hi all,
I'm working on a project with the T-SIM7600E/G-H board that is based on the ESP32 and I've run into a bit of a roadblock. I need to attach a flow meter, which requires an interrupt pin, but I'm running low on available GPIOs.
My eyes are set on the VSPI pins - specifically GPIO 23, 19, 18, and 5. These pins are typically used for SPI communication and are not utilized in my current setup. The pinout diagrams provided with the board don't specify whether these pins can handle interrupts, and the documentation is a bit unclear on this.
Has anyone successfully used these VSPI GPIO pins as interrupt-driven inputs on the ESP32, particularly on the T-SIM7600E/G-H board? Are there any nuances during the boot or reset phases, or any other potential issues, that I should be aware of when using these pins as interrupt sources?
I'm trying to make sure I don't run into unexpected behavior down the line, so any guidance or experiences shared would be greatly appreciated!
Thank you in advance!
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@mijail-makaroff-0 They can be used as GPIO and therefore interrupts.
The old Arduino boards had dedicated I/O, but ESP32 uses a 'GPIO multiplexer'.
-Terry
